Shivers [ 360p · 8K ]

A shiver is an involuntary physiological response characterized by rapid, rhythmic muscle contractions and relaxations. Controlled by the hypothalamus in the brain, it serves as a critical defense mechanism to maintain the body's internal temperature, or homeostasis. Common Biological Causes

Shivering occurs most frequently when the body senses a drop in temperature. Shivering: Causes, treatment, and when to see a doctor Shivers